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Danfoss 3 Series User Manual

Danfoss 3 Series
28 pages
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© Danfoss | 2022.11
LGB53080
Termix VX-IV - 3 Series DS Fully insulated
Operating Guide
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Danfoss 3 Series Specifications

General IconGeneral
Power Supply230 V AC
Housing MaterialPlastic
Connection TypeScrew terminals
MountingWall mounted
Relative Humiditynon-condensing

Summary

Introduction

Warranty and product liability

Glossary of technical terms

Key to symbols

Materials

Unit label

Functional specification

Personal protective equipment

Warning of dangerous situations

Safety notes

Authorised personnel

Specifies that assembly, installation, commissioning, and maintenance must be carried out by qualified personnel.

Warning of high pressure and temperatures

Alerts users to pay attention to the installation's permitted system pressure and operating temperature.

Warning of hot surfaces

Warns users about hot surfaces that can cause burns.

Connection

Highlights the need to establish a way to shut off all energy sources and keep wires from hot pipes.

Assembly, installation and commissioning

Unpacking and preparation

Instructions for removing packaging and disposing of materials according to local legislation.

Authorised personnel for Installation

States that assembly, installation, and commissioning must be performed by an authorized HVAC technician.

Lifting the unit

Guidance on how to lift the unit, specifying specific points for safe handling.

Lifting instructions

Mounting and installation

Adequate space

Recommends allowing sufficient space around the HIU for mounting and future maintenance.

Hanging and fastening

Ensures the wall and fastenings can support the unit's gross weight.

Re-tightening

Emphasizes re-tightening screw fittings after transit vibrations.

Dismantling the insulation

Disassembly of the inspection- and service hatch

Details the process for removing the inspection and service hatches.

Disassembly of the side frame

Describes the steps for removing the side frame of the unit.

Design

Schematic description - Termix VX-IV RAD

Schematic description - Termix VX-IV UFH

Electrical connections and wiring

Authorised electrician

States that all electrical installation work must be performed by an authorised electrician.

Potential bonding

Outlines requirements for potential bonding according to relevant standards.

Disconnection

Specifies that electrically connected HIUs must be disconnected for repairs.

Wiring diagram - radiator heating

Wiring diagram - underfloor heating

Fitting of energy meter

Mounting the energy meters

Details the steps for mounting energy meters, including closing valves and loosening nuts.

Sensor pocket

Notes that energy meter sensors are mounted in the sensor pockets.

Commissioning

Filling of the secondary heating system

Describes the process of filling the heat exchanger with water until it reaches working pressure.

Pressure gauge

Explains the function of the HTG pressure gauge and safety precautions.

Pre-pressure

Details the pre-pressure requirement for the HIU based on system head.

Start-up

Start pump

Instructs to start the pump and adjust it to its highest speed.

Vent system

Guides on how to vent the installation after radiators have warmed up.

Pump settings

Advises adjusting the pump speed to recommended settings.

Underfloor heating

Pump stop function

Explains the pump stop function requirement for underfloor heating applications.

Heating controls

RAVK controller (35-75 °C)

Details temperature settings and relation between scale numbers and closing temperature.

Thermostatic control

Explains how flow temperature is controlled using the thermostatic controller.

Removing the RAVK sensor

Provides steps for removing the RAVK sensor from the valve.

Thermoactuators

Activating the thermoactuators

Describes the 'first open' function and its disabling during commissioning.

Differential pressure controller

Circulator pump UPM3

Grundfos UPM3 AUTO instructions

Recommended Circulator Pump Settings

Offers recommended settings for the circulator pump based on installation factors.

IMIT Thermostat

Safety valve

Access to safety valve

Details how to access the safety valve for inspection or maintenance.

Expansion tank

Heat Exchanger

Fill/drain valve

Air vent, manual

Maintenance

Strainers

Recommends regular cleaning of strainers as part of maintenance.

Meters

Suggests checking operating parameters and meter readings.

Temperatures

Advises checking supply and flow temperatures.

Connections

Recommends checking all connections for leaks.

Troubleshooting

Incorrect flow temperature for space heating

Provides causes and solutions for incorrect flow temperature issues.

Primary return temperature too high

Addresses problems where the primary return temperature is excessively high.

Noise in the unit

Offers solutions for troubleshooting noise issues within the unit.

Deactivation and dismantling

Disposal

Guides on proper disposal of the product and its components according to local legislation.

Declaration of conformity

Pre hand over check list

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